IFR ticket vs. professional training (MD, PhD...)

I got into a discussion with an non-pilot MD comparing
a professional degree versus flying.

My background, BS and MS from the top 2 bioengineering programs
in the US. (note, I put *much* more weight to experience over letters
after a name including my own). Flying-wise, I have a PPL and
about 33 hours into my IFR ticket. I should be able to complete
it in under 45 so I'm probably ahead of the curve but a I gotta put
much of this on my book and mental preparation before each
flight and ahead of time that others didn't commit to. I plan
on doing this for the challenge, excitement and unique lifestyle
of being a pilot. I might, in fact, probably will become a CFI(I)
but not full time. We'll see. If someone pays me $10 (or better
yet $500,000) to fly their challenger or Citation to wherever I want
to go, I'll consider. ;-) I've been in professional challenging
situations and none have come close to IFR in IMC.

Overall, my flying experience is just like everyone elses. It is
challenging but by the time you get your ticket and after that
still challenging as it is a never ending battle with learning to stay
ahead of the plane.
The IFR ticket is definitely a step above that as the consequences
is a LOT greater. It is a licence to kill and there is a NEVER ending
true battle with learning everything to save the asses to which the
plane is strapped to. IFR is and will always be for me, the
non-professional, challenging. Certainly after my training, my head
hurts from the concentration level required. All of this is absolutely
impossible to explain to a non-pilot...even a non-IFR pilot it is difficult.

Back to the original question. This person I had the discussion with
is under the impression of flying is probably more like driving and anybody
can do it. This person is the typical MD, their way is the only way and
they
are the only ones who do it right and no one else can comprehend (I work
for a medical device company and have dealt with hundreds of
neurosurgeons, oncologists and medical physicists around the world).

So the big question, compared to a your profession, how does flying
VFR and IFR compare with regards to training, proficiency, continued
training, mental challenge and anything else that comes to mind? No
need to convince me but more to convince the non-pilot. In particular
I'd like to hear from the professions that require advanced degrees.

Gerald Sylvester